mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-12 18:25:03 +00:00
45e7c67aff
This commit improves returned error codes by forwarding error codes. In some instances, the hardcoded returned error codes made no sense at all: The normal error code for failure of av_new_packet() is AVERROR(ENOMEM), yet there were instances where AVERROR(EIO) was returned. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
312 lines
9.9 KiB
C
312 lines
9.9 KiB
C
/*
|
|
* Sony Playstation (PSX) STR File Demuxer
|
|
* Copyright (c) 2003 The FFmpeg project
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* PSX STR file demuxer
|
|
* by Mike Melanson (melanson@pcisys.net)
|
|
* This module handles streams that have been ripped from Sony Playstation
|
|
* CD games. This demuxer can handle either raw STR files (which are just
|
|
* concatenations of raw compact disc sectors) or STR files with 0x2C-byte
|
|
* RIFF headers, followed by CD sectors.
|
|
*/
|
|
|
|
#include "libavutil/channel_layout.h"
|
|
#include "libavutil/internal.h"
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
|
|
#define RIFF_TAG MKTAG('R', 'I', 'F', 'F')
|
|
#define CDXA_TAG MKTAG('C', 'D', 'X', 'A')
|
|
|
|
#define RAW_CD_SECTOR_SIZE 2352
|
|
#define RAW_CD_SECTOR_DATA_SIZE 2304
|
|
#define VIDEO_DATA_CHUNK_SIZE 0x7E0
|
|
#define VIDEO_DATA_HEADER_SIZE 0x38
|
|
#define RIFF_HEADER_SIZE 0x2C
|
|
|
|
#define CDXA_TYPE_MASK 0x0E
|
|
#define CDXA_TYPE_DATA 0x08
|
|
#define CDXA_TYPE_AUDIO 0x04
|
|
#define CDXA_TYPE_VIDEO 0x02
|
|
|
|
#define STR_MAGIC (0x80010160)
|
|
|
|
typedef struct StrChannel {
|
|
/* video parameters */
|
|
int video_stream_index;
|
|
AVPacket tmp_pkt;
|
|
|
|
/* audio parameters */
|
|
int audio_stream_index;
|
|
} StrChannel;
|
|
|
|
typedef struct StrDemuxContext {
|
|
|
|
/* a STR file can contain up to 32 channels of data */
|
|
StrChannel channels[32];
|
|
} StrDemuxContext;
|
|
|
|
static const uint8_t sync_header[12] = {0x00,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x00};
|
|
|
|
static int str_probe(const AVProbeData *p)
|
|
{
|
|
const uint8_t *sector= p->buf;
|
|
const uint8_t *end= sector + p->buf_size;
|
|
int aud=0, vid=0;
|
|
|
|
if (p->buf_size < RAW_CD_SECTOR_SIZE)
|
|
return 0;
|
|
|
|
if ((AV_RL32(&p->buf[0]) == RIFF_TAG) &&
|
|
(AV_RL32(&p->buf[8]) == CDXA_TAG)) {
|
|
|
|
/* RIFF header seen; skip 0x2C bytes */
|
|
sector += RIFF_HEADER_SIZE;
|
|
}
|
|
|
|
while (end - sector >= RAW_CD_SECTOR_SIZE) {
|
|
/* look for CD sync header (00, 0xFF x 10, 00) */
|
|
if (memcmp(sector,sync_header,sizeof(sync_header)))
|
|
return 0;
|
|
|
|
if (sector[0x11] >= 32)
|
|
return 0;
|
|
|
|
switch (sector[0x12] & CDXA_TYPE_MASK) {
|
|
case CDXA_TYPE_DATA:
|
|
case CDXA_TYPE_VIDEO: {
|
|
int current_sector = AV_RL16(§or[0x1C]);
|
|
int sector_count = AV_RL16(§or[0x1E]);
|
|
int frame_size = AV_RL32(§or[0x24]);
|
|
|
|
if(!( frame_size>=0
|
|
&& current_sector < sector_count
|
|
&& sector_count*VIDEO_DATA_CHUNK_SIZE >=frame_size)){
|
|
return 0;
|
|
}
|
|
vid++;
|
|
|
|
}
|
|
break;
|
|
case CDXA_TYPE_AUDIO:
|
|
if(sector[0x13]&0x2A)
|
|
return 0;
|
|
aud++;
|
|
break;
|
|
default:
|
|
if(sector[0x12] & CDXA_TYPE_MASK)
|
|
return 0;
|
|
}
|
|
sector += RAW_CD_SECTOR_SIZE;
|
|
}
|
|
/* MPEG files (like those ripped from VCDs) can also look like this;
|
|
* only return half certainty */
|
|
if(vid+aud > 3) return AVPROBE_SCORE_EXTENSION;
|
|
else if(vid+aud) return 1;
|
|
else return 0;
|
|
}
|
|
|
|
static int str_read_header(AVFormatContext *s)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
StrDemuxContext *str = s->priv_data;
|
|
unsigned char sector[RAW_CD_SECTOR_SIZE];
|
|
int start;
|
|
int i;
|
|
|
|
/* skip over any RIFF header */
|
|
if (avio_read(pb, sector, RIFF_HEADER_SIZE) != RIFF_HEADER_SIZE)
|
|
return AVERROR(EIO);
|
|
if (AV_RL32(§or[0]) == RIFF_TAG)
|
|
start = RIFF_HEADER_SIZE;
|
|
else
|
|
start = 0;
|
|
|
|
avio_seek(pb, start, SEEK_SET);
|
|
|
|
for(i=0; i<32; i++){
|
|
str->channels[i].video_stream_index=
|
|
str->channels[i].audio_stream_index= -1;
|
|
}
|
|
|
|
s->ctx_flags |= AVFMTCTX_NOHEADER;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int str_read_packet(AVFormatContext *s,
|
|
AVPacket *ret_pkt)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
StrDemuxContext *str = s->priv_data;
|
|
unsigned char sector[RAW_CD_SECTOR_SIZE];
|
|
int channel, ret;
|
|
AVPacket *pkt;
|
|
AVStream *st;
|
|
|
|
while (1) {
|
|
|
|
if (avio_read(pb, sector, RAW_CD_SECTOR_SIZE) != RAW_CD_SECTOR_SIZE)
|
|
return AVERROR(EIO);
|
|
|
|
channel = sector[0x11];
|
|
if (channel >= 32)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
switch (sector[0x12] & CDXA_TYPE_MASK) {
|
|
|
|
case CDXA_TYPE_DATA:
|
|
case CDXA_TYPE_VIDEO:
|
|
{
|
|
|
|
int current_sector = AV_RL16(§or[0x1C]);
|
|
int sector_count = AV_RL16(§or[0x1E]);
|
|
int frame_size = AV_RL32(§or[0x24]);
|
|
|
|
if(!( frame_size>=0
|
|
&& current_sector < sector_count
|
|
&& sector_count*VIDEO_DATA_CHUNK_SIZE >=frame_size)){
|
|
av_log(s, AV_LOG_ERROR, "Invalid parameters %d %d %d\n", current_sector, sector_count, frame_size);
|
|
break;
|
|
}
|
|
|
|
if(str->channels[channel].video_stream_index < 0){
|
|
/* allocate a new AVStream */
|
|
st = avformat_new_stream(s, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
avpriv_set_pts_info(st, 64, 1, 15);
|
|
|
|
str->channels[channel].video_stream_index = st->index;
|
|
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
|
|
st->codecpar->codec_id = AV_CODEC_ID_MDEC;
|
|
st->codecpar->codec_tag = 0; /* no fourcc */
|
|
st->codecpar->width = AV_RL16(§or[0x28]);
|
|
st->codecpar->height = AV_RL16(§or[0x2A]);
|
|
}
|
|
|
|
/* if this is the first sector of the frame, allocate a pkt */
|
|
pkt = &str->channels[channel].tmp_pkt;
|
|
|
|
if(pkt->size != sector_count*VIDEO_DATA_CHUNK_SIZE){
|
|
if(pkt->data)
|
|
av_log(s, AV_LOG_ERROR, "mismatching sector_count\n");
|
|
av_packet_unref(pkt);
|
|
ret = av_new_packet(pkt, sector_count * VIDEO_DATA_CHUNK_SIZE);
|
|
if (ret < 0)
|
|
return ret;
|
|
memset(pkt->data, 0, sector_count*VIDEO_DATA_CHUNK_SIZE);
|
|
|
|
pkt->pos= avio_tell(pb) - RAW_CD_SECTOR_SIZE;
|
|
pkt->stream_index =
|
|
str->channels[channel].video_stream_index;
|
|
}
|
|
|
|
memcpy(pkt->data + current_sector*VIDEO_DATA_CHUNK_SIZE,
|
|
sector + VIDEO_DATA_HEADER_SIZE,
|
|
VIDEO_DATA_CHUNK_SIZE);
|
|
|
|
if (current_sector == sector_count-1) {
|
|
pkt->size= frame_size;
|
|
*ret_pkt = *pkt;
|
|
pkt->data= NULL;
|
|
pkt->size= -1;
|
|
pkt->buf = NULL;
|
|
return 0;
|
|
}
|
|
|
|
}
|
|
break;
|
|
|
|
case CDXA_TYPE_AUDIO:
|
|
if(str->channels[channel].audio_stream_index < 0){
|
|
int fmt = sector[0x13];
|
|
/* allocate a new AVStream */
|
|
st = avformat_new_stream(s, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
|
|
str->channels[channel].audio_stream_index = st->index;
|
|
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
st->codecpar->codec_id = AV_CODEC_ID_ADPCM_XA;
|
|
st->codecpar->codec_tag = 0; /* no fourcc */
|
|
if (fmt & 1) {
|
|
st->codecpar->channels = 2;
|
|
st->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
|
|
} else {
|
|
st->codecpar->channels = 1;
|
|
st->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
|
|
}
|
|
st->codecpar->sample_rate = (fmt&4)?18900:37800;
|
|
// st->codecpar->bit_rate = 0; //FIXME;
|
|
st->codecpar->block_align = 128;
|
|
|
|
avpriv_set_pts_info(st, 64, 18 * 224 / st->codecpar->channels,
|
|
st->codecpar->sample_rate);
|
|
st->start_time = 0;
|
|
}
|
|
pkt = ret_pkt;
|
|
if ((ret = av_new_packet(pkt, 2304)) < 0)
|
|
return ret;
|
|
memcpy(pkt->data,sector+24,2304);
|
|
|
|
pkt->stream_index =
|
|
str->channels[channel].audio_stream_index;
|
|
pkt->duration = 1;
|
|
return 0;
|
|
default:
|
|
av_log(s, AV_LOG_WARNING, "Unknown sector type %02X\n", sector[0x12]);
|
|
/* drop the sector and move on */
|
|
break;
|
|
}
|
|
|
|
if (avio_feof(pb))
|
|
return AVERROR(EIO);
|
|
}
|
|
}
|
|
|
|
static int str_read_close(AVFormatContext *s)
|
|
{
|
|
StrDemuxContext *str = s->priv_data;
|
|
int i;
|
|
for(i=0; i<32; i++){
|
|
if(str->channels[i].tmp_pkt.data)
|
|
av_packet_unref(&str->channels[i].tmp_pkt);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVInputFormat ff_str_demuxer = {
|
|
.name = "psxstr",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Sony Playstation STR"),
|
|
.priv_data_size = sizeof(StrDemuxContext),
|
|
.read_probe = str_probe,
|
|
.read_header = str_read_header,
|
|
.read_packet = str_read_packet,
|
|
.read_close = str_read_close,
|
|
.flags = AVFMT_NO_BYTE_SEEK,
|
|
};
|